Soccer-Brazilian Rafael signs new four-year deal with United

July 2 (Reuters) - Brazilian full back Rafael, 21, hassigned a new four-year contract that will keep him at ManchesterUnited until 2016.

"Rafael is one of the club's brightest young prospects. Hehas no fear of playing and has great belief in himself," managerAlex Ferguson told the club's website (www.manutd.com) onMonday.

"The boy has developed immensely since joining United (in2008), his energy and enthusiasm are a joy to watch. Rafael hasall the attributes to become one of the best full backs in theworld and I am delighted he has signed a new contract."

Rafael's twin brother Fabio is also a member of United'sfirst-team squad.